| 摘要 |
FIELD: electricity. ^ SUBSTANCE: corrector of power ratio comprises an input filter, a rectifier, a rectified voltage divider, a transistor, a diode, a throttle, a current sensor, an output capacitor, and a circuit to control a power ratio corrector, the drain of the second transistor is connected to the rectifier's output, and its gate is connected to the output of the signal level conversion circuit, and the drain is connected to the throttle, the second diode and the signal level conversion circuit, the input of the latter is connected to the output of the first comparator, in which the first input is connected to the current sensor, and the second input - to the first reference voltage, besides, the first input of the second comparator is connected to the rectified voltage divider, the second input is connected to the second reference voltage, and the output is connected to the first comparator. ^ EFFECT: reduced start-up currents, increased reliability, increased efficiency factor and expanded range of permissible values of grid voltage. ^ 1 dwg |
